0.2.1

I figure I will just start posting commit updates here as the first step to regularly making dev log entries.  Here is a clip showing the primary change:  

• when light and dark entities are occupying the same cell in a level, and a rift source moves to where the dark entity would be in the light and vice versa, the rift excludes their particular tile, and the rift is not active at their location.  as soon as one or the other moves away from that location to where they are no longer "stacked", then the rift is correctly applied, preventing any further stacking.
• characters are now added into game.entities list, and as such, many locations of code where there were self.characters + self.entities
• usage was removed... watch out for new bugs! :| hopefully there are none by this change alone :)
• attack turn action now respects dimensional rules, and proper enforcement of other rules for sure (incapacitated, enemy faction only, etc)
• tweaked movement speed up slightly so 10 speed characters (default value upon creation) don't move so sluggish on the map
• added dimension scenario to new game options
• placeholder for telekinetic condition/action now exists, mostly because I don't feel like excluding it from this commit

I will post a new build along with these changes, after I wrap up some more bug fixes over the weekend.